Help my i7 920 c0 get to 3.8-4ghz

Originally Posted by freakb18c1 

most c0's dont need 1.4 for 4.0ghz, you're going to need to get your qpi and uncore tuned before you can get a good baseline overclock..
QPI Link Speed 36X
Uncore Frequency 16X
this might be labeled differently if your bios, but once you set that i'm sure you'll be stable with 1.4v from 4.0ghz to 4.2 i bet.

Originally Posted by Swag 

Ai Overclock Tuner.....................[Manual]
CPU Ratio Setting......................[21.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[191]
PCIE Frequency.........................[100]
DRAM Frequency.........................[Set closest to DDR3-1600MHZ]
UCLK Frequency.........................[Double what is above]
QPI Link Data Rate.....................[Auto]
CPU Voltage Control....................[Manual]
CPU Voltage............................[1.3200 or closest]
CPU PLL Voltage........................[1.80]
QPI/DRAM Core Voltage..................[1.27500 or closest]
IOH Voltage............................[1.14]
IOH PCIE Voltage.......................[1.50]
ICH Voltage............................[1.20]
ICH PCIE Voltage.......................[1.50]
DRAM Bus Voltage.......................[1.64 or closest]
DRAM DATA REF Voltage on CHA...........[Auto]
DRAM CTRL REF Voltage on CHA...........[Auto]
DRAM DATA REF Voltage on CHB...........[Auto]
DRAM CTRL REF Voltage on CHB...........[Auto]
DRAM DATA REF Voltage on CHC...........[Auto]
DRAM CTRL REF Voltage on CHC...........[Auto]
Load-Line Calibration..................[Enabled]
CPU Differential Amplitude.............[800mV]
CPU Clock Skew.........................[Delay 300ps]
CPU Spread Spectrum....................[Disabled]
IOH Clock Skew.........................[Auto]
PCIE Spread Spectrum...................[Disabled]
C1E Support............................[Disabled]
Hardware Prefetcher....................[Enabled]
Adjacent Cache Line Prefetch...........[Enabled]
Intel(r) Virtualization Tech...........[Disabled]
CPU TM Function........................[Enabled]
Execute Disable Bit....................[Enabled]
Intel(r) HT Technology.................[Enabled]
Active Processor Cores.................[All]
A20M...................................[Disabled]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Intel(r) C-STATE Tech..................[Disabled]
Ask if you have any questions.

Originally Posted by Swag 

Yes, 21x is a whole lot more stable. Its just the way it is.

Originally Posted by Bit_reaper 

I'm on a 920 D0 and I have to use a lot more voltage on the QPI.
CPU Voltage............................[1.35]
QPI/DRAM Core Voltage..................[1.356]
But If that was the issue then you should get 0xD1 or 0x0A. As far as I know the only way to fix 0x101 is to ramp up the vcore. One thing you can try is to use a 19x multiplier and BCLK of 211. For me this had the best stability on the CPU but did give me a hard time getting the RAM stabile hence the big bump in the QPI/DRAM Core Voltage.
Edit: By the way you should read the OCN guide http://www.overclock.net/t/538439/guide-to-overclocking-the-core-i7-920-or-930-to-4-0ghz its one of the best ones out there.